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<title>Derived Data Set Element</title>
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<h1>DerivedDataSet</h1>

<p>An extended data set retrieved by a query through an extension driver and contains sub data set contents.</p>

<h3>Description</h3>

<p>The Derived Data Set represents an extended data set that defines query text which is managed
by an extension driver.</p>

<p>The Derived Data Set element defines a series of sub data set elements that are referred in their query
text. The item in the list can be any type of data set Model supports, such as script data set, ODA data set, 
joint data set and another derived data set.</p>

<h2 class="property">extensionID</h2>

<p>The ID of a data set type supported by the ODA data source extension.</p>

<h3>Description</h3>

<p>The fully qualified ID that uniquely identifies the type
of ODA data set definition in the BIRT environment.  It is defined in the ODA data
source extension plug-in manifest (plugin.xml) in the <code>dataSet.id</code>
attribute. Its value is optional
if the ODA extension supports only one type of data set.</p>

<h3>See Also</h3>
<h2 class="property">inputDataSets</h2>

<p>The sub data set elements that the query text refer.</p>

<h3>Description</h3>

<p>List of the name of the sub data sets that this element refers.</p>

<h2 class="property">queryText</h2>

<p>The static query text to execute.</p>

<h3>Description</h3>

<p>The query text used in opening a data set. Specific ODA driver defines the
format of this string. The query text is passed through to the ODA run-time
driver to prepare a query for execution.</p>

<h3>See Also</h3>

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